46% (1992)

58% (1995)

65% (2000)

60% (1998)

55% (1997)

48% (1998)

58% (1997)

47% (1998)

50% (1998)

52% (2001)

54% (1993)

35% (1994)

36% (1994)

62% (2001)

64% (1997)

34% (1992)

32% (1992)

48% (1992)

14% (1993)

35% (1998)